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3ef650d398
To avoid possible interleaving, add missing '\n' to formats. Convert pr_warning to pr_warn while there. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
225 lines
5.4 KiB
C
225 lines
5.4 KiB
C
#ifndef _FS_CEPH_OSDMAP_H
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#define _FS_CEPH_OSDMAP_H
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#include <linux/rbtree.h>
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#include <linux/ceph/types.h>
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#include <linux/ceph/decode.h>
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#include <linux/ceph/ceph_fs.h>
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#include <linux/crush/crush.h>
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/*
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* The osd map describes the current membership of the osd cluster and
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* specifies the mapping of objects to placement groups and placement
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* groups to (sets of) osds. That is, it completely specifies the
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* (desired) distribution of all data objects in the system at some
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* point in time.
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*
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* Each map version is identified by an epoch, which increases monotonically.
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*
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* The map can be updated either via an incremental map (diff) describing
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* the change between two successive epochs, or as a fully encoded map.
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*/
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struct ceph_pg {
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uint64_t pool;
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uint32_t seed;
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};
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#define CEPH_POOL_FLAG_HASHPSPOOL 1
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struct ceph_pg_pool_info {
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struct rb_node node;
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s64 id;
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u8 type;
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u8 size;
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u8 crush_ruleset;
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u8 object_hash;
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u32 pg_num, pgp_num;
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int pg_num_mask, pgp_num_mask;
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s64 read_tier;
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s64 write_tier; /* wins for read+write ops */
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u64 flags;
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char *name;
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};
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static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
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{
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switch (pool->type) {
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case CEPH_POOL_TYPE_REP:
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return true;
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case CEPH_POOL_TYPE_EC:
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return false;
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default:
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BUG_ON(1);
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}
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}
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struct ceph_object_locator {
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s64 pool;
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};
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/*
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* Maximum supported by kernel client object name length
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*
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* (probably outdated: must be >= RBD_MAX_MD_NAME_LEN -- currently 100)
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*/
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#define CEPH_MAX_OID_NAME_LEN 100
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struct ceph_object_id {
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char name[CEPH_MAX_OID_NAME_LEN];
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int name_len;
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};
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struct ceph_pg_mapping {
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struct rb_node node;
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struct ceph_pg pgid;
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union {
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struct {
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int len;
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int osds[];
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} pg_temp;
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struct {
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int osd;
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} primary_temp;
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};
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};
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struct ceph_osdmap {
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struct ceph_fsid fsid;
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u32 epoch;
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u32 mkfs_epoch;
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struct ceph_timespec created, modified;
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u32 flags; /* CEPH_OSDMAP_* */
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u32 max_osd; /* size of osd_state, _offload, _addr arrays */
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u8 *osd_state; /* CEPH_OSD_* */
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u32 *osd_weight; /* 0 = failed, 0x10000 = 100% normal */
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struct ceph_entity_addr *osd_addr;
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struct rb_root pg_temp;
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struct rb_root primary_temp;
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u32 *osd_primary_affinity;
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struct rb_root pg_pools;
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u32 pool_max;
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/* the CRUSH map specifies the mapping of placement groups to
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* the list of osds that store+replicate them. */
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struct crush_map *crush;
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struct mutex crush_scratch_mutex;
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int crush_scratch_ary[CEPH_PG_MAX_SIZE * 3];
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};
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static inline void ceph_oid_set_name(struct ceph_object_id *oid,
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const char *name)
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{
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int len;
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len = strlen(name);
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if (len > sizeof(oid->name)) {
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WARN(1, "ceph_oid_set_name '%s' len %d vs %zu, truncating\n",
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name, len, sizeof(oid->name));
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len = sizeof(oid->name);
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}
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memcpy(oid->name, name, len);
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oid->name_len = len;
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}
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static inline void ceph_oid_copy(struct ceph_object_id *dest,
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struct ceph_object_id *src)
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{
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BUG_ON(src->name_len > sizeof(dest->name));
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memcpy(dest->name, src->name, src->name_len);
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dest->name_len = src->name_len;
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}
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static inline int ceph_osd_exists(struct ceph_osdmap *map, int osd)
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{
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return osd >= 0 && osd < map->max_osd &&
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(map->osd_state[osd] & CEPH_OSD_EXISTS);
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}
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static inline int ceph_osd_is_up(struct ceph_osdmap *map, int osd)
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{
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return ceph_osd_exists(map, osd) &&
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(map->osd_state[osd] & CEPH_OSD_UP);
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}
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static inline int ceph_osd_is_down(struct ceph_osdmap *map, int osd)
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{
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return !ceph_osd_is_up(map, osd);
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}
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static inline bool ceph_osdmap_flag(struct ceph_osdmap *map, int flag)
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{
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return map && (map->flags & flag);
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}
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extern char *ceph_osdmap_state_str(char *str, int len, int state);
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extern u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd);
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static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map,
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int osd)
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{
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if (osd >= map->max_osd)
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return NULL;
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return &map->osd_addr[osd];
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}
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static inline int ceph_decode_pgid(void **p, void *end, struct ceph_pg *pgid)
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{
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__u8 version;
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if (!ceph_has_room(p, end, 1 + 8 + 4 + 4)) {
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pr_warn("incomplete pg encoding\n");
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return -EINVAL;
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}
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version = ceph_decode_8(p);
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if (version > 1) {
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pr_warn("do not understand pg encoding %d > 1\n",
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(int)version);
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return -EINVAL;
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}
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pgid->pool = ceph_decode_64(p);
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pgid->seed = ceph_decode_32(p);
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*p += 4; /* skip deprecated preferred value */
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return 0;
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}
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extern struct ceph_osdmap *ceph_osdmap_decode(void **p, void *end);
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extern struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end,
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struct ceph_osdmap *map,
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struct ceph_messenger *msgr);
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extern void ceph_osdmap_destroy(struct ceph_osdmap *map);
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/* calculate mapping of a file extent to an object */
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extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
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u64 off, u64 len,
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u64 *bno, u64 *oxoff, u64 *oxlen);
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/* calculate mapping of object to a placement group */
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extern int ceph_oloc_oid_to_pg(struct ceph_osdmap *osdmap,
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struct ceph_object_locator *oloc,
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struct ceph_object_id *oid,
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struct ceph_pg *pg_out);
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extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap,
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struct ceph_pg pgid,
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int *osds, int *primary);
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extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap,
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struct ceph_pg pgid);
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extern struct ceph_pg_pool_info *ceph_pg_pool_by_id(struct ceph_osdmap *map,
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u64 id);
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extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id);
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extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name);
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#endif
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